Otto klatte



(No Model.) O. KLATTE.

MEANS FOR ADJUSTING ROLLS FOR ROLLING MILLS.

Patented-Dec. 18, 1894 Inventor.-

u/iw /nesses 5. @MM I UNITED STA ES PATENT OFFICE.

OTTO KLATTE, OF N EUWIED-ON-THE-RHINE, GERMANY.

MEANS FOR ADJUSTING ROLLS FOR ROLLING-MILLS.

SPECIFICATION forming part of Letters Patent No. 530,949, dated December18, 1894.

Application filed April 12, 18 94 Serial No. 507,268. (No model.)

To all whom it may concern: 7

Be it known that I, OTTO KLATTE, a subject of the King of Prussia,residing at Neuwied-on-the-Rhine, Prussia, have invented certain new anduseful Improvements in Means for Accurately Adjusting the Rolls forRolling-Mills, of which thefollowing is a specification.

My invention relates to those rolls which areused in the manufacture ofchains or of bars with impressions of any kind. Such rolls are describedin my application filed March 8, 1892, Serial No. 424,127, and in myapplication filed September 14, 1893, Serial N 0. 485,487. (Separatedapplication is entitled rolls for chain rolling mills) These rollsconsist of a central part, which is pushed loosely on the roll shaft,and of two disks, which clamp this central part between them and whichare fixed to the shaft. The central part may consist of a single disk orof several such disks arranged in close proximity or of a core disk onwhich a ring is pushed. It is provided with a row of holes arranged in acircle, which pass transversely through it, are oval in form and afforda passage for the bolts, which serve to bolt the central part betweenthe said disks. When these bolts are loosened the central part can berotated to a certain extent on the roll shaft on account of the ovalform of the bolt holes. Four rolls of this description are arranged asdescribed in my application of March 8, 1892, Serial No. 424,127, and inmy application of September, 14, 1893, Serial No. 485,487. (Separatedapplication is entitled rolling mill for the manufactureor shaping ofchains) The four rolls must be accurately adjusted in relation to oneanother so that the depressions formed in the peripheries of the rollstake up the correct position in respect of one another.

The subject of this invention is a contrivance for effecting thisobject, and consists of an eccentric, which passes transversely throughthe central part of the roll and is journaled at each end in theclamping disks by means of pivots. A lever is fitted on one of thesepivots outside the clamping disk by means of which the eccentric can befixed in position. When the eccentric is turned the central part theaccompanying drawings in combination with a roll such as is described inmy application of September 14,1893, Serial No. 485,487.

(Separated application is entitled roll for 1 chain rolling mills)Figure l is a'vertical section. Fig. 2 shows a front view. Fig. 3 showsavertical section through that part ofthe roll, in which the eccentric issituated, to a larger scale.

The central part of the roll here consists of a core disk 1, of a ringdisk 2 pushed on the same and of two lateral strengthening disks 3, 3,which are bolted to the ring disk by means of bolts 4. This central partis pushed on the roll axle 5 and by means of bolts 7 is bolted to thedisks 6, 6, which are constructed as bevel wheels. A square hole Sismade through the core disk 1 and the strengthening disks 3, Fig. 3, anda square block 9 is placed in the same. In the direction of a radius ofthe core disk passing through the center of the block, the latter isshorter than the height of the square hole 8, but in the other directionit fits accurately in the hole. The block can therefore be displaced inthe hole .only in the direction of this radius. A circular hole is boredthrough the center of the block 9 and in this hole is fitted accuratelybut movably a cylinder 10, which is provided at each end eccentricallywith a pivot 11. The two pivots lie in the same center line, so that thecylinder forms an eccentric relatively to the pivots. The pivots 11 passthrough holes in the disks 6, 6. The portion 12 of the one pivot, inFig. 1 the left, which projects from the disk is made square, and anindicator lever 13 and a spanner 14 in front of the lever are fitted onthe same. If the spanner be turned in either direction the eccentric 10is correspondingly turned, and consequently by means of the block 9 thecentral part 1, 2, 3, 4 of the roll,

between the disks 6, 6, is moved through a certain angle on the axle 5.Before the spanner 14 is turned the bolts 7 must be loosened.

After the central part 1, 2, 3, 4 of the roll has been correctlyadjusted relatively to the other three rolls, the eccentric is fixed inplace with the help of the indicator lever 13 as follows: The indicatoris provided at its free end in the direction of its length with a row offour smooth holes 15 Fig. 2, and this end moves over a sector plate 16,which is fastened to one of the disks 6 and is provided with four rowsof holes 17. The holes 17, which are provided with a screw thread, andare arranged on four concentric arcs of a circle the center of which isthe center of the pivot 11. The distance of the concentric arcs from oneanother is equal to the distance between the holes 15 of the indicator13.

A displacement of the indicator lever a distance equal to the distancebetween two holes on the outer arc corresponds to a displacement of onemillimeter on the outer periphery of the roll. The holes on the otherthree concentric arcs permit of displacements of a quarter of amillimeter.

The fixing of the eccentric with the help of the indicator lever iseffected by passing a screw through that hole in the indicator which,after the adjustment of the roll, is situated exactly over a hole in thesector plate 16 and screwing the same into the said hole in the sectorplate. The central part of the roll is then secured in this position tothe disks or wheels 6 6, which inclose it. The bolts 7 are then againscrewed up and in consequence of the resulting friction the eccentricadjusting contrivance is freed from strain.

The above described adjusting contrivance permits of the accurateadjustmentof the rolls without the necessity of taking the latter apart,so that alterations, which are a result of the rolling operation, can atany time be compensated for. These alterations in the relative positionof the peripheries of the rolls are mainly due to the fact that at eachrolling the jumping of the rolls, which cannot be absolutely avoided,causes the spur wheels of the gearing to engage in one anotherdifferently from the way they engage when the machine is running withoutload, that is the teeth which engage are forced farther apart, even ifonly to a slight extent, so that the driven wheel remains somewhatbehind in comparison with the same wheel when the machine is runningwithout load.

Having fully described my invention, what I desire to claim and secureby Letters Patent is 1. The combination with the roll axle, and a rollcomprising a central part movable on the roll axle and two outer disksor wheels between which such central part is arranged, of an eccentricresting in a hole of such central part and provided with pivotsrestingin holes in the aforesaid outer disks, substantially as setforth.

2. The combination with the roll axle, and a roll comprising a centralpart movable on the roll axle and two outer disks or wheels betweenwhich such central part is arranged, of a radially adjustable block andan eccentric located in a hole in the aforesaid central partand providedwith two pivots resting in holes in such outer disks, substantially asset forth.

3. The combination with the roll axle, and a roll comprising a centralpart movable on the roll axle and two outer disks or wheels betweenwhich such central part is arranged, of an eccentric resting in a holein such central part and having two pivots resting in holes in saidouter disks, an indicator lever carried by one of such pivots andprovided with holes as explained and a plate over which the indicatorlever is adapted to move and which is secured to one of the aforesaidouter disks, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

OTTO KLATTE. W itnesses:

FRITZ ScHRoDER, SOPHIE NAGEL.

